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Identification and ERA-15 Climatology of Potential Vorticity Streamers and Cutoffs near the Extratropical Tropopause
Publisher: American Meteorological Society
Abstract: A novel approach is introduced to identify potential vorticity (PV) streamers and cutoffs as indicators of Rossby wave breaking near the extratropical tropopause and to compile climatologies of these features on different ...
Stratosphere–Troposphere Exchange and Its Relation to Potential Vorticity Streamers and Cutoffs near the Extratropical Tropopause
Publisher: American Meteorological Society
Abstract: Two distinct dynamical processes near the dynamical tropopause (2-PVU surface) and their relation are discussed in this study: stratosphere?troposphere exchange (STE) and the formation of distinct potential vorticity (PV) ...
Evaluating Foehn Occurrence in a Changing Climate Based on Reanalysis and Climate Model Data Using Machine Learning
Publisher: American Meteorological Society
When during Their Life Cycle Are Extratropical Cyclones Attended by Fronts?
Publisher: American Meteorological Society
Abstract: AbstractFor nearly a century, the study of atmospheric dynamics in the midlatitudes has presented dichotomic perspectives on one of its focal points: the birth and life cycle of cyclones. In particular, the role of fronts ...
Changes in Weather Systems during Anomalously Wet and Dry Years in Southeastern Australia
Publisher: American Meteorological Society
IWAL–An Interactive Weather Analysis Laboratory
Publisher: American Meteorological Society
Abstract: omplementary key elements of meteorological education are the provision of a thorough theoretical understanding of the physical laws governing atmospheric motions, and the hands-on investigation and visualization of specific ...
Potential Vorticity Anomalies of the Lowermost Stratosphere: A 10-Yr Winter Climatology
Publisher: American Meteorological Society
Abstract: Inspection of the potential vorticity (PV) distribution on isentropic surfaces in the lowermost stratosphere reveals the ubiquitous presence of numerous subsynoptic positive PV anomalies. To examine the space?time ...
Disentangling the Forcing Mechanisms of a Heavy Precipitation Event along the Alpine South Side Using Potential Vorticity Inversion
Publisher: American Meteorological Society
Abstract: Extreme precipitation events along the Alpine south side (AS) are often forced by upper-level positive potential vorticity (PV) anomalies over western Europe. These so-called PV streamers go along with a dynamical forcing ...
Nowcasting Foehn Wind Events Using the AdaBoost Machine Learning Algorithm
Publisher: American Meteorological Society
Abstract: he south foehn is a characteristic downslope windstorm in the valleys of the northern Alps in Europe that demands reliable forecasts because of its substantial economic and societal impacts. Traditionally, a foehn is ...
On the Local Available Potential Energy Perspective of Baroclinic Wave Development
Publisher: American Meteorological Society